code: def get_reduction_args(self, axis=None):
      return dict()
  
file_path: mars/mars/dataframe/reduction/custom_reduction.py
imports: from ...None import opcodes
  from ...config import options
  from ...core import OutputType
  from ...serialization.serializables import AnyField
  from .core import DataFrameReductionOperand, DataFrameReductionMixin
label_desc: Use image node_id 2 for calling the DataFrameCustomReduction obj's underlying member method code with example usage: obj.get_reduction_args(axis) and returns: dict